package com.jay.base.thread.book;

/**
 * Created by caoyuan7 on 2019/7/23.
 */
public class BadLockOnInteger implements Runnable {
    public static Integer i = 0;
    static BadLockOnInteger instance = new BadLockOnInteger();

    @Override
    public void run() {
        for (int j=0;j<10000000;j++){
            synchronized (instance){
                i++;
            }
        }
    }
    public static void main(String args[]) throws InterruptedException{
        Thread t1 = new Thread(instance);
        Thread t2 = new Thread(instance);
        t1.start();
        t2.start();
        t1.join();
        t2.join();
        System.out.println(i);
    }
}
